Aeistide bebges



A,- BBRGS.

No Modem VALVE.

10.314,784. Patented Mar 31, 1885.

EEEEE l UNITED STATES PATENT OFFICE.

AEIsTIDE EEEeEs, oE GRENOBLE, isEEE, FRANCE.

VALVE.

SPECIFICATION forming part of Letters Patent No. 314,784, dated March31, 1885.

l Application filed March 15, 1884. (No model.) Patented in FranceDecember Q0, 182, No. 152,764.

To LZZ whom it may concern,.-

Be it known that I, AEIsTIDE BERGEs, of Grenoble, in the Department ofIsre, iu the Republic of France, have invented certain new and usefulImprovements in Cocks for Water and other Fluids, of which the followingis a specification.

The invention is intended more particu larly for cocks which are to besubjected to iuids under great pressures; but it may be of someadvantage in many ordinary situations.

rlhe accompanying drawings represent a specimen of my improved cock.They show the novel parts,with so much of the ordinary parts as isnecessary to show their relation thereto.

Figure l is a central vertical section th rough the cock complete. Fig.2 is a horizontal section, partly in plan, and Fig. 3 is a verticalcrosssection through the casing alone.

Similar letters of reference indicate like parts in all the figures.

The part corresponding to the ordinary plug7 is marked a. I will call itthe plug, although it does not completely fill the space in the casing,like an ordinary plug, but is forced by the pressure of the water, aidedby other forces, if necessary, against the discharge side of the case,and makes a perfectly tight lit on a raised ridge or internal lip, b,around the discharge-orifice c, while it is a little out of cont-actwith the casing at all other points, or nearly all other. lt is butslightly coned or tapered. It may be cylindrical, if preferred. A squarerecess, a', in the end ofthe plug a receives a looselyfitting .squareend, d, of a pin or shaft, f, which is turned at will by the aid of ahandwheel, f. This shaft is supported in a removable cover, c, for thetop of the case, and is applied and removed therewith. Being looselyfitted iu the recess in a, these parts may be out of line withoutinvolving any mischief. It is important that the plug be guided in itsturning motion by the approXimately close contact of the interior of thecasing. I make a sufficient internal rim, b, around the orifice c on thereceiving side of c to properly guide the plug; but it should not be atight contact. The water or other fluid under pressure should flow pastthe joint on the receiving side of the plug and raise the pressure tothe maximum in the space i at each. end of the plug, and also in theslight i space along the sides. The only surfaces which make fluid-tightconta-cts are the body of the plug a with the rim b on the deliveryside, the stuffing-box around the shaft f, and of course the surfaces ofcontact between the cover @and the case. The bottom of the case may beclosed, as shown. As the pressure of the iiuid on the coniform sides ofthe plug and on the lower end is the same as the pressure on the upperend of the plug., there is a balance of these forces under allconditions, with no tendency of the plug a to move endwise either upwardor downward. The cover e may be held firmly by screw-threads, or by anyother efficient means. When the cock is made of small size, it may havethe rim b wider in proportion,so as to afford a sufficient bearing toinsure tightness. It is important that there be a little play to allowthe plug to be easily forced over against the delivery side of the caseand make a tight contact with the nicely-finished face of the rim b onthat side without necessitating any movement of the shaft f and head d.

I claim as my inventionl. In combination with the plug a, the casinghaving an internal rib or rim, as b, surrounding the discharge-orice c,and having spaces, as i, between said casing and plug, to allow abalance-pressure on the plug, as set forth.

2. In a cock in which a loose plug is held to a rim surrounding thedischarge-orifice by the uid-pressure, the combination, with the casinghaving such rim b, of the plug a, having recess a', and the shaft f,having its end dtitting loosely in said recess, whereby the force of thefluid will be enabled to carry the plug to its seat b withoutinterfering with the action or bearings of said shaft, as set forth.

3. The combination of the casing, having rims b b surrounding theentrance and discharge apertures c c, with spaces i between said rims,the loose plug a, and the operatingshaftf, having its end fittingloosely in said plug, as and for the purposes set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

AEIsTIDE BEEGEs.

IOO

